Not 100% sure, but could be oxidation. Yellow is one think, dark could
indicate arcing/carbon tracking (really, really bad for a rolled cap.
Electric field are sufficiently concentrated that free radicals maybe even
some
ozone could be produced.
On Mon, Mar 10, 2014 at 9:56 PM, david baehr <dfb25@xxxxxxxxxxx> wrote:
> I have three old ,early 1990's , home rolled T.C.B.O.R. caps with pole
> trans oil in them. The oil has been slowly turning from clear to a yellow
> color . What could be causing this ? They still seem to function ok.
> Thanks, Dave B
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--
Dave Sharpe, TCBOR/HEAS
Chesterfield, VA USA
Sharpe's Axiom of Murphy's Law
"Physics trumps opinion!"
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